. A survey was performed to assess the quality of ambient air in Jakarta, Bogor,Depok, Tangerang and Bekasi. Ambient air samples were collected from 33 sampling points at a distance of 0meter and 120 meters from each main roads respectively. The highest average content of TSP in ambientair at 0 meter was found in West Jakarta (652.02 p.g/cu.m) and that of 120 meters from the main road was in Bekasi (445.46µg/cu.m ). The highest difference of the TSP content between the two sampling pointswas in Kebon Jeruk, West Jakarta (96.62 %), and the lowest one was inCikarang, Bekasi (1.63 %). Furthermore, the highest difference of the PM-10 content between the two sampling points was inJalan Raya Bogor, Depok (96.86 %), and the lowest one was in Cikarang, Bekasi (17.26%). In the whole areasof study, the average content of TSP was 522.44.tg/cu.m (0 meter), and178.09µg/cu.m (120 meters), so the difference of the pollutant content between the two sampling points was 65.91%. Meanwhile, theaverage content of PM-10 was 326.25µg/cu.m (0 meter), and97.09µg/cu.m (120 meters), so the difference of the pollutant content between the two sampling points was 70.24 %. The difference of the means ofboth TSP and PM-10 content levels between the two sampling sites were significant. The percentages ofsampling points complying withTSP level standard were 9.52 % (0 meter) and 75.76% (120 meters from the road sides). While that of PM-10 were 18.18% (road side sampling) and 78.79% (120 meters from theroad sides).Crusial measure for controlling theTSP and PM-10 pollution should also be addressed tomobile sources, such as reducing diesel motorized-vehicles and providing proper mass transportation.